Writing instrument



FIG. 1 is a left-side elevational view of a writing instrument showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a bottom plan view thereof, on an enlarged scale;

FIG. 6 is a top plan view thereof, on an enlarged scale;

FIG. 7 is a top, front perspective view;

FIG. 8 is a top, rear perspective view; and,

FIG. 9 is a sectional view, on an enlarged scale, taken along the line 9--9 of FIG. 1 and looking in the direction of the arrows. 

The ornamental design for a writing instrument, as shown. 